JP3995743B2 - Local cleaning and sterilization equipment for air conditioners - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a local cleaning and sterilizing apparatus for an air conditioner for sterilizing microorganisms adhering to a heat exchanger, a drain pan, and the like in an existing air conditioner.
[0002]
[Prior art]
Airborne microorganisms in indoor air cause various disorders such as allergies such as atopy and hay fever, food rot and contamination of pharmaceuticals, and hospital-acquired infections.
[0003]
Cleaning and cleaning of ready-made air conditioners for packaged air conditioner units and fan coil units (ceiling type, floor type) is only a matter of cleaning within the reach of filters, air outlets, suction ports, etc. Microorganisms adhering to exchangers and drain pans are not sterilized.
[0004]
Conventionally, there are air-conditioner sterilization systems that use ultraviolet rays, but when organic substances adhere (dust, dust, etc.), ultraviolet rays are blocked by dust, dust, etc., and an effective sterilization effect is obtained. In addition, the replacement time of the ultraviolet lamp is early, and there is a deficiency in maintenance.
[0005]
The present inventors previously proposed a spot cleaning and sterilizing apparatus for spot cleaning and sterilizing a heat exchanger in an existing air conditioner in Japanese Patent Application No. 8-88238.
[0006]
This spot cleaning sterilizer installs an ozone water cleaning tool on the heat exchanger in the air conditioner and supplies ozone water from the ozone water generator to the ozone water cleaning tool through a flexible tube. The cleaning is performed.
[0007]
[Problems to be solved by the invention]
This spot cleaning sterilization apparatus is intended for portability, but is not applicable to, for example, a ceiling-suspended type or an air conditioner without an open / close lid depending on the type of the air conditioner. Moreover, the local cleaning of the air conditioner and the ozone generator are one-by-one, and in order to clean a large number of air conditioners, a cleaning sterilizer must be set each time, resulting in a reduction in efficiency.
[0008]
In particular, these air conditioners are off-the-shelf products, unlike large-scale air conditioners for buildings, and are installed in many rooms, so that it is difficult to effectively wash and sterilize them.
[0009]
Then, the objective of this invention is providing the local washing | cleaning sterilization apparatus of the air conditioning machine which can solve the said subject and can effectively sterilize the heat exchanger and drain pan of many air conditioning machines.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is an ozone cleaning method for injecting low-concentration ozone water onto the upper or upper side of a heat exchanger of a plurality of air conditioners installed on the floor or ceiling of each floor. provided tube, respectively, while each floor the floor or along the ceiling provided a common ozone pipe to the ozone pipes with connecting the respective ozone cleaning tube to the ozone piping through a valve, the ozone supplying a low concentration of ozone A local cleaning and sterilizing apparatus for an air conditioner provided with a control device for connecting a water generator, opening and closing each of the above-mentioned valves in sequence and operating the ozone water generator.
[0011]
The invention of claim 2 connects an ozone drain pipe to a drain pan below each heat exchanger, connects the ozone drain pipe to a common drain pipe provided along the floor and ceiling of each floor, and is cleaned from the drain pipe. The local cleaning and sterilizing apparatus for an air conditioner according to claim 1, wherein the ozone water is drained later.
[0012]
The invention of claim 3 is the local cleaning of the air conditioner according to claim 2, wherein the drain pipe is connected to an ozone water generator, ozone is injected into the ozone water after washing in the drain pipe and circulated through the ozone pipe. Sterilizer.
[0013]
In the invention of claim 4, the ozone pipe is composed of a vertical pipe passing through each floor and a horizontal pipe connected to the vertical pipe and provided along the floor and ceiling of each floor, and the horizontal pipe and each of the ozone cleaning pipes described above. Is a local cleaning and sterilizing device for an air conditioner according to any one of claims 1 to 3, which is connected via a valve .
[0014]
In the invention of claim 5, the drain pipe is composed of a vertical pipe passing through each floor and a horizontal pipe connected to the vertical pipe and provided along the floor and ceiling of each floor, and the horizontal pipe and each of the ozone drain pipes described above. It is the local washing | cleaning sterilization apparatus of the air conditioner in any one of Claims 2-4 connected .
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.
[0016]
In FIG. 1, 10 is an air conditioner composed of a packaged air conditioner unit or a fan coil unit, which is an off-the-shelf product, installed on the floor in each room (floor type), embedded in the ceiling (ceiling type), or wall It is made up of various types such as hanging on a wall (wall-mounted type).
[0017]
As shown in FIGS. 3A, 3B, and 3C, an ozone cleaning pipe 21 is provided inside each air conditioner 10 so as to be located above the heat exchanger 20. Low-concentration ozone water jetted from the nozzle 22 flows down to the drain pan 25 below the fin plate 23 and the refrigerant pipe 24 of the heat exchanger 20. Further, as shown in FIG. 3 (d), the ozone cleaning pipes 21 are arranged on the upper and lower sides of one side of the heat exchanger 20, and ozone water is injected from the upper and lower nozzles 22 as shown in FIG. 3 (c). In this way, the heat exchanger 20 may be disposed on both side upper portions so that ozone water is jetted upward from the nozzle 22.
[0018]
As shown in FIG. 1, each ozone cleaning pipe 21 is connected to a common ozone pipe 12 through a valve 11, and the ozone pipe 12 is connected to an ozone water generator 13.
[0019]
Although not shown in detail, the ozone water generator 13 generates ozone water by supplying air or oxygen-enriched air to an ozonizer to generate ozone and generating ozone water by dissolving the ozone in water. Ozone water is appropriately stored in a storage tank, and ozone water is supplied from the storage tank to the ozone pipe 12 by a pump.
[0020]
The ozone water concentration supplied to the ozone pipe 12 is a low concentration ozone water of 0.1 mg / l to several mg / l, and the gas phase ozone concentration generated from the ozone water is a low concentration gas of 0.1 ppm to several ppm. It should be harmless as phase ozone and exert its deodorizing effect in the living room.
[0021]
The valves 11 connected to the ozone cleaning pipes 21 are controlled to be opened and closed by the control device 14 so that when the air conditioning operation of the air conditioner 10 is stopped, the ozone water generator 13 is operated and the valves 11 are sequentially opened and closed. It has become.
[0022]
Next, the operation of the present invention will be described.
[0023]
The control device 14 sequentially opens and closes the valves 11 to clean and sterilize the air conditioner 10 when the air conditioner 10 in each room is stopped. The valve 11 is opened and closed to supply ozone water at the same time, even if one unit is set according to the amount of ozone water supplied from the ozone water generator 13.
[0024]
Washing and sterilization with ozone water is performed several tens of minutes per unit. When the cleaning and sterilization is completed, the valve 11 of the air conditioner 10 is closed and the valves 11 of the other air conditioners 10 are opened to sequentially sterilize. .
[0025]
In this way, by connecting the air conditioners 10 with the ozone pipes 12 and sequentially opening and closing the valves 11, it becomes possible to wash and sterilize a large number of air conditioners 10 with one ozone water generator 13.
[0026]
FIG. 2 shows another embodiment of the present invention.
[0027]
In the present embodiment, an ozone drain pipe 15 is connected to a drain pan 25 (FIG. 3) below each heat exchanger 20, the ozone drain pipe 15 is connected to a common drain pipe 16, and cleaning is performed from the drain pipe 16. The drained ozone water is drained, the drain pipe 16 and the ozone water generator 13 are connected by a circulation line 17, and part or all of the ozone water after washing is returned to the ozone water generator 13 and again ozone gas. Is dissolved and then circulated through the ozone pipe 12.
[0028]
In the embodiment of FIG. 1, the ozone water flowing down to the drain pan 25 is drained in the same manner as the drain water generated during cooling, but in this embodiment, the drain pan 25 is connected by a common drain drain pipe 15 and washed. The ozone water can be reused. Thereby, there is an effect that the ozone water generator 13 can be further downsized.
[0029]
FIG. 4 shows still another embodiment of the present invention.
[0030]
In the form of FIG. 3, the air conditioner 10 is an off-the-shelf product and is suitable for mounting the ozone cleaning pipe 21 when it is already installed on the ceiling or floor. Thus, the ozone cleaning pipe 21a is attached to the upper portion of the heat exchanger 20 together with the refrigerant pipe 24 together with the fin plate 23. In this case, since the nozzle 22a is partitioned between the fin plates 23, the nozzle 22a is formed in a slit shape along the entire fin.
[0031]
By attaching the ozone cleaning tube 21a in advance in this way, post-installation work is not necessary.
[0032]
FIGS. 5A and 5B show a form of a cylindrical heat exchanger 20b employed in a ceiling-embedded type, in which the cleaning tube 21b is formed in a ring shape, and along the ring. The nozzle 22b is formed.
[0033]
FIG. 6 shows a local cleaning and sterilizing apparatus for the air conditioner 10 installed in an actual building.
[0034]
In the figure, 10f represents a floor-mounted air conditioner, and 10c represents a ceiling-suspended air conditioner.
[0035]
The ozone water generator 13 is installed on the floor 31 of an arbitrary floor, and the ozone pipe 12 connected to the ozone water generator 13 is a vertical pipe 12a passing through each floor, a horizontal pipe 12f laid on the floor, and a ceiling 33. It is composed of a horizontal pipe 12f installed above, and valves 32f and 32c are connected in the vicinity of the connecting portion of the vertical pipe 12a of the horizontal pipes 12f and 12c and the ozone water cleaning pipe 21 (in the corresponding air conditioners 10f and 10c) ( And a valve 11 for connection.
[0036]
Similarly, the drain pipe 16 is composed of a vertical pipe 16a and horizontal pipes 16f and 16c, and the horizontal pipes 16f and 16c are connected to an ozone drain pipe 15 connected to a drain pan (not shown) in the air conditioners 10f and 10c. Connecting.
[0037]
Although not shown, the control device 14 sequentially opens and closes the valves 11 on each floor as in FIGS.
[0038]
The drainage from each air conditioner 10 to the horizontal pipes 12f and 12c of the drain drainage pipe 16 may be appropriately inclined so as to flow by gravity, or may be configured to forcibly drain by a pump.
[0039]
【The invention's effect】
In short, according to the present invention, it is possible to wash and sterilize a large number of air conditioners with one ozone water generator by connecting the air conditioners with ozone piping and sequentially opening and closing the valves.
[Brief description of the drawings]
FIG. 1 is a schematic view showing an embodiment of the present invention.
FIG. 2 is a schematic view showing another embodiment of the present invention.
FIG. 3 is a diagram showing details of an ozone water cleaning pipe provided in an air conditioner in the present invention.
FIG. 4 is a diagram showing another embodiment of FIG.
FIG. 5 is a diagram showing still another embodiment of FIG. 3;
6 is a diagram showing details as seen from the building in the form of FIG. 2. FIG.
[Explanation of symbols]
10 Air conditioner 11 Valve 12 Ozone piping 14 Control device

Claims (5)

The top or upper portion of the heat exchanger of the plurality of air conditioners installed in a room of the floor and ceiling of each floor, a low concentration formed ozone cleaning pipe for injecting ozone water, respectively, while each floor floor and ceiling common along the ozone piping is provided, on its ozone pipe with connecting the respective ozone cleaning tube to the ozone piping through a valve, with connecting the ozone water generator for supplying a low concentration ozone, sequentially open and close the valves A local cleaning and sterilizing device for an air conditioner, characterized in that a control device for operating an ozone water generator is provided. Connect the ozone drain pipe to the drain pan below each heat exchanger, connect the ozone drain pipe to a common drain pipe provided along the floor and ceiling of each floor, and drain the ozone water after washing from the drain pipe. The local cleaning and sterilizing apparatus for an air conditioner according to claim 1.   The local cleaning and sterilizing device for an air conditioner according to claim 2, wherein the drain pipe is connected to an ozone water generator, and ozone is injected into the ozone water after cleaning in the drain pipe and circulated through the ozone pipe. The ozone pipe is composed of a vertical pipe that passes through each floor and a horizontal pipe that is connected to the vertical pipe and is provided along the floor and ceiling of each floor. The horizontal pipe is connected to each ozone cleaning pipe via a valve. local cleaning and sterilizing apparatus of the air conditioner according to any one of claims 1 to 3 that. The drain pipe is composed of a vertical pipe passing through each floor and a horizontal pipe connected to the vertical pipe and provided along the floor and ceiling of each floor, and connected to the horizontal pipe and each of the ozone drain pipes. 4. The local cleaning and sterilizing apparatus for an air conditioner according to any one of 4

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